Tradable discharge permits: Functioning, historical applications and international potential Author Howe C.W. Journal/Series Colorado Journal of International Environmental Law and Policy | Vol. 4(2); 370 - 383; 14 p. Date 1993 Source IUCN (ID: ANA-049892) Publisher | Place of publication The University Press of Colorado | Niwot, CO, USA Language English Field of application International Country/Territory United States of America Subject Water, Environment gen., Air & atmosphere Keyword Subsidy/incentive Freshwater quality/freshwater pollution